first r9m_elrs_bl.frk is copied to the radio and flashed with the normal "Flash external module" method. the stock BL will install this new bootloader @ 0x08002000. then, build Frsky_TX_R9M_via_stock_BL and copy the result (firmware.elrs) to the

Quote:ExpressLRS is an open source RC link for RC aircraft. It is based on SX127x hardware combined with an ESP8285 , ESP32 or STM32 for RX and TX respectively. ExpressLRS can be flashed into existing Frsky R9M hardware (RX and TX) or custom PCBs can be m

Hi, I boughed a r9m 2018 second hand and it will arrive this week so I can flash it with this alternative fw. I went to the jlpcb and ordered 5 rx pcb’s now I need to order some electronic parts that I don’t have. I have a question concerning the valu